FR2251943A1 - Three-phase transformer - uses opposite phase symmetric three phase voltages to reduce ripple - Google Patents

Three-phase transformer - uses opposite phase symmetric three phase voltages to reduce ripple

Info

Publication number
FR2251943A1
FR2251943A1 FR7341236A FR7341236A FR2251943A1 FR 2251943 A1 FR2251943 A1 FR 2251943A1 FR 7341236 A FR7341236 A FR 7341236A FR 7341236 A FR7341236 A FR 7341236A FR 2251943 A1 FR2251943 A1 FR 2251943A1
Authority
FR
France
Prior art keywords
phase
windings
symmetric
transformer
voltages
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7341236A
Other languages
French (fr)
Other versions
FR2251943B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LYS JACQUES FR
Original Assignee
LYS JACQUES FR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LYS JACQUES FR filed Critical LYS JACQUES FR
Priority to FR7341236A priority Critical patent/FR2251943A1/en
Publication of FR2251943A1 publication Critical patent/FR2251943A1/en
Application granted granted Critical
Publication of FR2251943B1 publication Critical patent/FR2251943B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

The three-phase transformer has a primary winding in either star or delta format. One form of secondary has three windings, with teh centre points connected together. The ends of the windings are connected to the mid-points of series pairs of diodes or thyristors. By addition, the DC component of the output is a function of the peak amplitudes of one resultant and of the other resultant from the phase additions. The ripple content is of the order of 1.7%. Alternative windings may take the form of two primaries, one in star and one in delta, and other multiple secondary windings. This arrangement avoids the need for harmonic filters and reduces the requirement for stop-coils.
FR7341236A 1973-11-20 1973-11-20 Three-phase transformer - uses opposite phase symmetric three phase voltages to reduce ripple Granted FR2251943A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7341236A FR2251943A1 (en) 1973-11-20 1973-11-20 Three-phase transformer - uses opposite phase symmetric three phase voltages to reduce ripple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7341236A FR2251943A1 (en) 1973-11-20 1973-11-20 Three-phase transformer - uses opposite phase symmetric three phase voltages to reduce ripple

Publications (2)

Publication Number Publication Date
FR2251943A1 true FR2251943A1 (en) 1975-06-13
FR2251943B1 FR2251943B1 (en) 1977-01-07

Family

ID=9127979

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341236A Granted FR2251943A1 (en) 1973-11-20 1973-11-20 Three-phase transformer - uses opposite phase symmetric three phase voltages to reduce ripple

Country Status (1)

Country Link
FR (1) FR2251943A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340800A1 (en) * 1988-05-06 1989-11-08 John Wharton Luce Moving magnetic field electric power converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0340800A1 (en) * 1988-05-06 1989-11-08 John Wharton Luce Moving magnetic field electric power converter

Also Published As

Publication number Publication date
FR2251943B1 (en) 1977-01-07

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Legal Events

Date Code Title Description
ST Notification of lapse